While there's no easy in game method for determining the location of all of your ships, don't forget that the asset window does have a search feature. For instance, if you're looking for your prized Ferox, you can search for Ferox in the asset window and it will give you the location of any Feroxes (Feroxen?) that you may own.
Additionally, when looking at assets for a particular station, you can sort the assets by volume. Generally speaking, this will put all of your ships at the top (or bottom) of the asset list as you're not likely to own much that's bigger than a ship.
Lastly, I've not used it myself, but according to one of my alliance mates, EveHQ may be able to provide exactly what you're looking for. Apparently the asset manager in the program is very full featured. http://www.evehq.net/
Like everything with EVE, I think this is going to be highly dependent on your skills. That said, drones ships aren't always the best for running wspace sites since wspace rats will aggro drones. For a combat ship, something that isn't highly dependent on cap seems to be a good choice, however. Some wspace sites will neut, so a ship with a good shield buffer and either missiles or projectile turrets will be somewhat more successful. Missiles and projectile turrets will continue to fire without capacitor, so you can still deal damage if a rat caps you out. Buffer tank means you won't have to rely on capacitor to maintain your tank. Shield tank means you won't need to spend ISK to repair your tank. Bear in mind that, should you decide to enter a C1 wormhole, you won't be able to bring in anything larger than battlecruiser sized ships.
These days when I explore, I'm looking for wormhole PVP just as much as I'm looking for anomalies to run, so my combat ship of choice has become a PVP fit Nighthawk. It will dish out approximately 600 dps with Heavy Missiles and drones and comes with a fair bit of EHP. The combination of tank plus DPS means that it will run most high sec anomalies without any trouble. That said, a PVE Nighthawk can solo anomalies in C1 and C2's without any trouble.
For a scan ship, I use a Cheetah on my other toon. I prefer the cheetah since I can fit a salvager in the high slot and a hacking module and analyzer in the mid slots. This means that I won't have to refit in between high sec anomalies. And while a Manticore is a valid choice, just keep in mind that your torps will be next to useless against any frigs you may encounter in an anomaly. Lastly, for those rare occasions where I encounter a high sec anomaly that the Nighthawk is too large to enter into, if I'm not too far from home, I'll swap out to a Gila for cruiser hull or an Ishkur for frigate hull.
Which two ships you chose, however, will always be dependent on your skills more than anything. I would just say that the two key things to remember are to use a scan ship with enough slots so that you don't have to refit, and a shield and missile/projectile turret combat ship in order to be the most resistant to rats that might neutralize your capacitor.
Best Answer
Assault ships are a bit heavier and ment for "prolonged" fights. Have better tanking capability. Can deal a nice amount of damage as well as take in a nice amount of damage.
Interceptors are very light, very fast version of the tech 1 counterpart. Have very low tanking capability but rely heavily on speed as a "tank". Can deal a very nice amount of damage.
In proper hands these ships can be very dangerous. I think they were created to enhance wolf pack tactics.
You need to be aware that in some cases a more skilled pilot in a cruiser will be in your way. You have a great chance of dying.